<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Tool
 * @subpackage Framework
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: RecursiveFilterIterator.php 18951 2009-11-12 16:26:19Z alexander $
 */

/**
 * @category   Zend
 * @package    Zend_Tool
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Tool_Framework_Loader_IncludePathLoader_RecursiveFilterIterator extends RecursiveFilterIterator
{

	protected $_denyDirectoryPattern = null;
	protected $_acceptFilePattern    = null;

	/**
	 * constructor
	 *
	 * @param RecursiveIterator $iterator
	 * @param string $denyDirectoryPattern
	 * @param string $acceptFilePattern
	 */
	public function __construct(RecursiveIterator $iterator, $denyDirectoryPattern = null, $acceptFilePattern = null)
	{
		$this->_denyDirectoryPattern = $denyDirectoryPattern;
		$this->_acceptFilePattern    = $acceptFilePattern;
		parent::__construct($iterator);
	}

	/**
	 * accept() - Which iterable items to accept or deny, required by FilterInterface
	 *
	 * @return unknown
	 */
	public function accept()
	{
		$currentNode = $this->current();
		$currentNodeRealPath = $currentNode->getRealPath();

		// if the current node is a directory AND doesn't match the denyDirectory pattern, accept
		if ($currentNode->isDir()
		&& !preg_match('#' . $this->_denyDirectoryPattern . '#', $currentNodeRealPath)) {
			return true;
		}

		// if the file matches the accept file pattern, accept
		$acceptable = (preg_match('#' . $this->_acceptFilePattern . '#', $currentNodeRealPath)) ? true : false;
		return $acceptable;
	}

	/**
	 * getChildren() - overridden from RecursiveFilterIterator to allow the persistence of
	 * the $_denyDirectoryPattern and the $_acceptFilePattern when sub iterators of this filter
	 * are needed to be created.
	 *
	 * @return Zend_Tool_Framework_Loader_IncludePathLoader_RecursiveFilterIterator
	 */
	public function getChildren()
	{
		if (empty($this->ref)) {
			$this->ref = new ReflectionClass($this);
		}

		return $this->ref->newInstance(
		$this->getInnerIterator()->getChildren(),
		$this->_denyDirectoryPattern,
		$this->_acceptFilePattern
		);
	}

}

